Warren, Peter, author
Hodder & Stoughton Ltd., 2013
Buku Teks
Bray, John, author
Institution of Engineering and Technology, 2009
eBooks
Kappel, Frederick R., 1902-
McGraw - Hill , 1960
Buku Teks
Cairns, John C.
Free Press, 1965
Buku Teks
edited by Stanley J. Kunitz, Howard Haycraft
Wilson, 1936
Buku Referensi